Connecticut Avenue Bridge, Spans Rock Creek & Potomac Parkway at Connecticut Avenue, Washington, District of Columbia, DC

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erected without steel reinforcement, composed entirely of monolithic concrete masonry and molded concrete block. It was an inspiration to Washington bridge designers of the twentieth century. Unprocessed Field note material exists for this structure: N269 Survey number: HAER DC-6 Building/structure dates: 1897- 1907 Initial Construction Building/structure dates: 1985 Subsequent Work